Stroco 15.00 M, Service Instructions Manual

Page: 12 / 38

ELECTRICAL CONNECTIONS
PAGE 12
The heater is available in two versions that can be used only for either 24V DC or 12V DC. The
external connections are gathered in 8-pin connectors A and B. The internal connectors of the heater
appears on a separate diagram, see page 32. Connect connectors as follows:
Connector A: Connected to the circulation pump.
Pin B1:
Connected to the diagnostic lamp. The other end of the diagnostic lamp is connected
to + (positive) contact. The diagnostic lamp must be a LED.
Pin B2:
Connect to - for a low temperature.
Pin B3:
Connect through a 10A (at 24V) and 8A (at 12V) fuse to + (positive).
Pin B5:
Connect to the room fan relay.
Pin B7:
Connect to the main switch or timer. Connect the other end of the switch through an
8A fuse to + (positive).
Pin B8:
Connect to frame (negative).
NOTE: The Heater can be set to adjust the temperature within two ranges (see
page 8-9: high/low temperature). Select the low range by connecting wire B2 to frame
point M. Select the NORMAL range by NOT connecting B2.